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Reinsurance - Reinsurance Arrangements (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Insurance [Abstract] |  |  |  |
Direct premiums written | $ 574,351 | $ 531,988 | $ 1,598,797 | $ 1,489,216
Ceded premiums written |  | 2,717 |  |
Ceded premiums written | (5,223) |  | (638,326) | (573,539)
Net premiums written | 569,128 | 534,705 | 960,471 | 915,677
Direct premiums earned | 507,745 | 474,311 | 1,480,466 | 1,393,003
Ceded premiums earned | (162,009) | (143,271) | (455,747) | (476,465)
Premiums earned, net | 345,736 | 331,040 | 1,024,719 | 916,538
Direct losses and loss adjustment expenses | 342,218 | 308,860 | 836,149 | 770,161
Ceded losses and loss adjustment expenses | (25,263) | (20,888) | (35,435) | (52,308)
Net Losses and Loss Adjustment Expenses | $ 316,955 | $ 287,972 | $ 800,714 | $ 717,853

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